IPA: /ˌrɛkəˈmɛndər/
KK: /ˌrɛkəˈmɛndər/
A person or system that suggests something to someone, often based on their preferences or needs.
The recommender provided me with great book suggestions based on my reading history.
Recommender → It is formed from "re-" (meaning again) and "commendare" (meaning to entrust or recommend). The word refers to someone who recommends or entrusts something to another person again.
Think of someone who 'entrusts' ('commendare') a suggestion 'again' ('re-') — that's why a recommender is someone who suggests something.